Bentley officially revealed the Continental GT Speed Convertible today ahead of its international debut at the North American International Auto Show in Detroit later this month.

With a top speed of 202 mph, it is the fastest four-seat convertible on the planet. That speed comes from a 6.0-liter W12 engine that produces 616 brake horsepower.

Not surprisingly, the ability to go from 0 to 60 mph in 4.1 seconds comes at the cost of fuel efficiency, especially since the car weighs 5,500 pounds.

It gets just 12 mpg in the city, and 20 mpg on the highway.

The Continental GT Speed Convertible sits on 21-inch wheels and is loaded with the luxury features that are characteristic of Bentley: fine wood veneers, diamond-quilted hide upholstery, and even a neck warmer for open air driving on chilly days.

In a similarly speed-oriented move, Bentley is also working toward the release of the GT3, a racing car to be marketed to wealthy drivers looking for more power than luxury.

Due in the second half of 2013, it won't be decked in wood and leather, but there will be a "clear linkage" between it and other Bentleys, sales and marketing director Kevin Rose says.

The GT3 will compete with track cars like the $597,000 McLaren 12C GT Can-Am Edition, but Rose expects the price to be somewhere between $300,000 and $400,000.